A nice touch is the subtle glow, which feels friendly during late-night repairs.
Pilz PNOZ X2P 24VACDC 2n/o Safety Relay 24V AC/DC, AC15: 230V, AC1: 240V
A nice touch is how the RL40 model snaps securely into the socket without any wobble.
A nice touch is the automotive relay design, and the model even comes with clear markings to help with quick wiring.
I like how the auto-off kicks in after a set time, keeping things simple and worry-free.